Make generated CMake projects consumable via FetchContent - #9
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Detect top-level vs embed so add_subdirectory/FetchContent only build the library by default. Move CLI/JSON/spdlog onto the app, export package config for find_package, and document the three consumption paths.
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Summary
IS_TOP_LEVEL) soadd_subdirectory/FetchContentonly build the library by default (app, tests, benchmarks, and app deps off unless opted in).install(EXPORT)/find_packagedo not require third-party targets.${name}Config.cmake+install(EXPORT)package config, dual aliases (::liband::${target}), and README docs for all three consumption modes.Proven end-to-end
Bootstrapped a calc-like package with
cppboot, pushed to GitHub, and verified a local consumer with:add_subdirectoryFetchContentfind_packageafter installSmoke repo was deleted after proof. 60 unit/integration tests pass.
Test plan
pytest(60 passed)